before we go to a break, briefly don barelli is with me. let's talk about the notion of accomplices. what would. accomplices entail? people who helped them get material, helped lay out a plan, helped get them places? >> any of those things are possible certainly. help them get components to make the explosive devices. this would have been something that they would have tried to disassociate their identities from the bomb. so for example, their fingerprints might not have shown up. funding, safe houses, weapons, all of the above. it could be as simple as just getting them transportation from point a to point b. >> and speaking of transportation to folks joining us who may have had plans to get to boston via air, amtrak, logan airport has been spotty, spro raddic. people have been landing and when they do they see the military and police presence. everyone trying to leave boston at logan is undergoing an extra ring of security. that's understandable. amtrak service has been stopped, i believe, north of providence. just because this is the bos